Rainfall trends in semi-arid cereal regions of Algeria
Other Title(s)
اتجاهات سقوط الأمطار في مناطق الحبوب شبه القاحلة في الجزائر
Joint Authors
Smadhi, Dalilah
Zella, Lakhdar
Amirush, Mawhub
Bashir, Hakim
Source
al-Qadisiyah Journal for Agriculture Sciences
Issue
Vol. 11, Issue 1 (30 Jun. 2021), pp.36-44, 9 p.
Publisher
University of al-Qadisiyah College of Agriculture
Publication Date
2021-06-30
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Topics
Abstract EN
The study focuses on rainfall, number of rainy days and droughts, on an annual time step basis, over the period (1940-2019).
Each parameter is analysed by the average behavior of 1, 817 variables representative of 23 semi-arid wilayas.
The approach helps to characterise the rainfall climate of cereal-growing regions, where production and yields per hectare are unstable for decades.
The average rainfall, estimated at 423 mm, shows a cyclical evolution, reflected by a change in averages: 430, 405, 440 mm.
These averages reproduce two relatively rainy cycles (1940-1970) and (2000-2019), separated by a dry cycle (1970-2000).
The frequency of cyclical rains, however, shows that rains above 400 mm remain less dominant over 79 years.
The averages of observations decrease progressively with the increase of the quantities of rains, that is to say, percentages that do not exceed 14, 13 and 9% .
These characteristics underline interannual droughts, which fluctuate between 0.8 and -2.5, showing a progressively decreasing number of rainy days.
The results obtained do not seem to explain all the variations in cereal production and yield.
However, the correlation coefficients below 35% reflect the efficient use of rainfall during the crop growth cycle, which is subject to other production factors.
American Psychological Association (APA)
Smadhi, Dalilah& Zella, Lakhdar& Amirush, Mawhub& Bashir, Hakim. 2021. Rainfall trends in semi-arid cereal regions of Algeria. al-Qadisiyah Journal for Agriculture Sciences،Vol. 11, no. 1, pp.36-44.
https://search.emarefa.net/detail/BIM-1257325
Modern Language Association (MLA)
Smadhi, Dalilah…[et al.]. Rainfall trends in semi-arid cereal regions of Algeria. al-Qadisiyah Journal for Agriculture Sciences Vol. 11, no. 1 (2021), pp.36-44.
https://search.emarefa.net/detail/BIM-1257325
American Medical Association (AMA)
Smadhi, Dalilah& Zella, Lakhdar& Amirush, Mawhub& Bashir, Hakim. Rainfall trends in semi-arid cereal regions of Algeria. al-Qadisiyah Journal for Agriculture Sciences. 2021. Vol. 11, no. 1, pp.36-44.
https://search.emarefa.net/detail/BIM-1257325
Data Type
Journal Articles
Language
English
Notes
تم أخذ العنوان باللغة العربية من موقع المجلة
Record ID
BIM-1257325